If we assume that that Legazpi is to be visited on the 19th, and we assume that the race hasn't started yet, I think we can guess that teams will be flying from Australia to the Philippines. I'm fairly certain that Manila is the only direct gateway from Australia, so here are the direct flights for the next couple of days.

Out likely endpoint airport is Legazpi. I would be very surprised if they arrived via any other means than air travel.

On the 17th, there are only 7 arrivals. The first six are at 7AM, 7.30AM, 9.10AM, 9.40AM, 12.35PM and 1.45PM and all come from Manila. The final flight is at 2.20PM and comes from Cebu, also a viable entry point if we assume teams will connect in South-East Asia.

On the 18th, we have an extra Manila flight at 9.25AM but no Cebu flight.

The producers picked a very good week to start, as this is a pretty busy week in Australia. As you might or might not already know, the Presidents Cup, which is one of the more prestigious golf tournaments in the World is going on right now in Melbourne. It is probably the most prestigious golf tournament that Australia has held in at least the last 13 years, so this is a big deal for many Australians. I am not saying this had any effect on their decision of when to start, but it definitely doesn't hurt TAR by not having as many people out and about ready to spoil.

As Peach pointed out, the Philippine Airlines flight is the only one from Sydney today. It departed an hour late and is currently estimated to arrive at 6.19pm.

We know that teams are supposed to be filming in Legazpi tomorrow, and there will be no more flights today from Manila after they land, so it is likely that they'll need to use an overnight bus to get there.